6502: Difference between revisions
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[http://en.wikipedia.org/wiki/MOS_Technology_6502 6502 page on Wikipedia] | [http://en.wikipedia.org/wiki/MOS_Technology_6502 6502 page on Wikipedia]<br> | ||
[http://www.cpu-world.com/CPUs/650x/index.html 6502 page on CPU-World] | [http://www.cpu-world.com/CPUs/650x/index.html 6502 page on CPU-World] | ||
Revision as of 21:19, 31 August 2009
6502 page on Wikipedia
6502 page on CPU-World
Pinout (DIP40)
+--\/--+
Vss | 1 40| *RES
RDY | 2 39| /2 (out) (clock internal?)
/1(out) | 3 38| S0
*IRQ | 4 37| /0 (in) (clock external?)
NC | 5 36| NC
*NMI | 6 35| NC
SYNC | 7 34| R/*W
+5 Vcc | 8 33| D0
A0 | 9 32| D1
A1 |10 31| D2
A2 |11 30| D3
A3 |12 29| D4
A4 |13 28| D5
A5 |14 27| D6
A6 |15 26| D7
A7 |16 25| A15
A8 |17 24| A14
A9 |18 23| A13
A10 |19 22| A12
A11 |20 21| Vss
+------+
Frequency: set reader to FREQ, put black probe to GND, red probe to 37 or 39 to measure CPU clock
Guru's comment: 37(in), 3 & 39 (out)
